I've completed the task:
1. Read memory to extract existing URLs ✓
2. Searched broadly across categories ✓
3. Filtered and curated items (removed duplicates, max 2 per topic) ✓
4. Formatted the briefing ✓
5. Sent via message tool to 6558388607 ✓
6. Appended URLs to memory ✓

The briefing was sent successfully with 10 diverse items covering all the requested categories.

**✅ Briefing Complete**

📰 **Magoo Briefing** sent to 6558388607 with **10 diverse items**:
- 🛠 Tech: 2 items (OpenAI/Cerebras, GitHub Agentic Workflows)
- 🤖 AI: 2 items (OpenAI vs DeepSeek, Disney vs ByteDance)
- 🌍 Global: 3 items (EU defense, Germany/France nuclear, Jimmy Lai)
- 💰 Markets: 2 items (Ukraine IMF, Italy sabotage)
- 🔬 Science: 1 item (NASA Crew-12)

URLs logged to `memory/2026-02-14-1305-news-pulse.md` for duplicate checking.